Control system for prime movers



March so, 1926." 1,578,867

c. B. TAYLOR CONTROL SYSTEM FOR PRIME MOVERS Filed June '18, 1924Patented Mar. 30, 1926. v

vonnmznsn maxima or. MILwAuk E', wirsoo vsnv, AssieivoR- r inns-Gimmescompanying "dra'vving forming apart thereof murec'runmeoomrmn', orMILWAUKEE, wrsoonsm, conr'onnfrron 101* DELAWARE.

' ooirrnons'vsrnivr on PRIME MovERs.

Applicationj-nled ifune18, 1924. sei-iarum'mamy To all whom it mayconcern Be it known thatCHARLEsB. TAYnoR,' a" citizen of the UnitedStates5'residing-at-M1'l- State of liscon sim'has invented a certain newand useful Control System for Prime -Movers; of which the following is aspecifijca' tii I: I V

' This invention relates to control systems for prime movers'and moreparticularly to' c means for automatically s'toppinga primep p v:Znectedto the-"rod 1"1.--"'The rod-{At extends s-lidably through; 1 acover for the tubular member=54 and is provided with an end'o'ol- I;-lar' '53. v A 'spring 52 is disposed around the ating fluid toanprimelmover and also for 1 controlling th'eapplication of'a brakethere- One offthe vobjects of the invention'is to provide'means forclosing the gate or other means for controllingthe admission of operto;Amore specificbbject is the provision ofmeans whereby the gatefof aprime mover will be automatically; closed; andfthe brake simultaneouslyapplied. Still another object is the provision of means whereby theaforementioned control'nieans may be readdesired distance from"'theprime mover. A further object is the provision ofgsimple andinexpensive means which is eificient in operation for performilycontrollable atv any ing the desired functions. Other objects theinvention proceeds will-appear hereinafter as the description of appearfrom the specification: and the ac- ".and disclosingon'e "embodiment ofsaid in- Referring to vention, and" all these' n'ovel' features arei'n-" tended to be pointed out in the-claims. v

the single 'figure'of' the drawings, the primemover Iis here shown as ahydraulic turbine adapted to drive a generator Qthrough a shaft'j3! Theadmission of water'to the turbine is shown as controlconnectedto a rod 6in turn connected "to a lable by means of a gate 4. Itis however l. tobe understood-that the admission of water I 'may be controlled inany-other'manner as I by'the usual guide"vanes of-tlie-turbinef The gate4 here'showd may be operated by" "means of a v crank 5 which isoperatively piston rod"? associated 'intliis instance with two pistons8; .9 of I a servo motor here shown asincludingtwo-separate cylinders inwhich the pistons 8, 9i operate. The, piston 8 may bemoved to'the leftand the'piston' 9'to the; right, thereby respectively closing andopenwaukee, in the county'fof Milwaukee and cylinders inWlilClYPlSlYOIIS 8; Q-operat'e. The

is connected in any desired suitable manner i'ng lever' '12, and atubularmembervofi con rod 54:"betvveen the collar '53 and the cover ofmember55; The floatinglever 12 is pivoted in the usual mannerto the flyball mechanism,l3- which ismade responsive regulating valve 10 isprovided "withthe f usual piston valves carriedby a rod 11: which vs0toa floating lever 12.-'-'I his connection is here shown as includingarod 5 suitably i pivotally connected at'on'e'end with the float-- to thespeed of the sha itt 3" by 'any'suitablei connection-{which may be abelt as shown.

'lhe'outwardand inward movement of the fly balls 13 lowers andraises thepivotal point'o'f floating lever 12 in theusual mant lie'rel ore theposition of gate 41 order to prevent over -ftra'vel of the'gat'e' 4 inre ponse to a speedregulating-efl'ect'the usual compensating"device-14,which is connected 7 A g V between-oneiendof the floating-lever 12*-and Y The novel features of'the invention-will Fluidunderjpressu-reforthe-operation of her tocontrol? the, regi'ilating valve 1O and theservo-motor maybe su] )plied;'tlirough" pipe 16, from a pressure supplytank 15, thepressure in which may be'fp-roduced 'and maintained byany'suitable means;

The rod 11 ofthe -regulating valve is here shown as provided 'with aprojection 17 i It will be understood that this projection' need Iv notnecessarily "be on therod'll but may be .o-n any'part moving ingunisontherewith.

Gooperating'with the projection I7 is a lever 18'pivotedat the-point'19. The other end of lever 18 iisconnected through a piston rod 20 to apiston 2l operating in a cylinder- 22.: The piston 21 i'shere'sh'own asbias'edy'by- 1' meansof a'sprijng 51,to; a position" in which theendofthe" lever"18 cooperating with 7 projection 17 will pla'oetheregulating valve 10- in the gate-closed position thereby fadmittingfluid under pressure to -move piston S inthe gate-closingdire'ction.{The movea mentofpiston 2l heres'hownfcontrollable inder 28.iWhen the coil 24 is deenergized source here shown as a battery 25. Thecircuit'of coil 24 may be closed by means of a switch which'may belocated at any de-' sired distance from anyfof the other elements.

The electromagnetic valve ,further comprises a piston-valve 27 operatingin a cylthe;-piston 27 is adapted 'to close a port 29 mconnected bymeans of a pipe 30 wlth theplpe -port32 connected by means of a pipe 33'16. Here shown as operating in unison with piston valve 27 is anotherpiston valve 31 .V

which, in the position shown, uncovers a with a port 34adapted to admitfluid under pressure to cylinder 22 to thereby force piston 21 againstthe bias ofspring 51 thereby swinging lever 18 in a direction to releasethe projection 17 and thus 'freeinglthe regulating valve 10 for controlby means, of they flyiballs. The piston valve 31 in the positionishown,also; uncovers a drain port 35 suitably connected with a receiving tank36. In the position of theparts as shown the spring 51, acting on piston21, has forced .fluid under pressure through pipe 33, ports 32, 35 tothereceiving'tank 36;

i The cylinder 28 is provided with another port 37 suitably connected toa port 38 in a cylinder 39 in which a piston 40 operates.

.1 be supplied by an air compresser 48, to one I 'mover for controllingsaid gate, means for 110 The piston '40 is biased, by means of a suit- Iable spring 41, to move the piston and a piston rod 42 associatedtherewith in a direction toswing an arm 43 adapted to operate anengineers-valve 44 to its openposition, The Y engineers valve may 1 alsobe'operated by :means of a handle 45. The valve 44 when open is adapted,to'permitthe passage of air (or other fluid) under pressure through a.

pipe 46 from a pressure tank 47, which may or more brake cylinders49thereby setting suitablebrakeshoes against a brake disk 50 associatedwith the shaft 3. The brakes may of coursebe applied to any otherrotating parts associated with the turbine or generator.

The operation of the system is as follows j Assuming that the switch 26is closed, coil 24' will be energized and act toiraise piston valves27and 31 therebyopening communication between port'29 and port32 thus ad-,7

mittingfluid under pressure above piston 21 forcing the same downwardlyto thereby free the projection 17.

gineers valve 44 so that, as here shown, it

may be rotated in a counter-clockwise direc- M action to; release airfrom brake cylinders 49 .gate 4. I At the same time piston 40 will actAt the same time port 29 is in communication with port 37 therebyadmitting fluidpressure'to cylinder 39 to force piston 40 in a directionto free the entime piston valve 31closes port 35 thereby preventingdrainage of fluid under pressure *sumed that the turbine is operatingat-normal speed, the piston 9flhaving moved the gate 4 to open position,and the switch 26 so is then opened, thereverse of the operationspreviously described will take place, namely, fluid under pressure willbe cut ofl' from cylinders 22 and 39xand they will be put intocommunication with the drain port 35 to the receiving tank 36. Springv51 will act to move regulating valve 10 to the gate closed positionthereby causing piston 8 to close to operate the valve 441to set thebrakes. The suitable connection between rod 11 and floating lever 12 ishere shown as including a spring 52 interposed between a collar 53 on arod 54, suitably connected to lever 12, a and the end of a tube 55connected to rod 11.

The control finger 18 may thereforemove rod 11 independently of theposition of float ing lever 12 by compressing spring 52.

It should, be understood that it'is not desired to limit the inventionto the exact details of construction shown, and described, for obviousmodifications may occur topersons skilled in the art. a

It is claimed and 'desiredlttosecure by Letters Patent: I 5 1. In acontrol system for a prime mover, a gate for controlling the admissionof operating fluid tosaid prime mover, a governor responsive to thespeedoi' said prime robbing said governor of control of said gate andfor causing said gate to close, a brake for said prime mover, means forapplying said brake, and commonwmeans for controlling said means forrobbing said gov- .ernor of control and said brake applying means.

- 2. In a system for stopping a prime mover, a gate for, controlling theadmission of operating fluid to said prime mover, a servo- 1 motor foroperatingvsaid-gate, a regulating ,valve for controlling saidservo-motor,

means for movinglsaid regulating valve to gate-closed position, a brakefor said prime mover, means forapplying said brake, and common means forcontrolling said means for moving said regulating valve to gateclosed aposition and said brake-applying means, s v i a i 3. In a'system forstopping a prime mover, a gate for controlling the admission of 1operating fluid to said prime mover, a' supply offluid under pressure,means for closmg said gate including means normally biased togate-closed position and held out of said position by said fluidpressure, a

brake for said prime mover, means including fluid. pressure operatedmeans for causing application of said-brake, and means for cutting 01fsaid supply of fluid pressure.

4. In a system for stopping a prime mov-f er, a gate for controllin theadmission'of operating fluid to said prime mover, a servomotor foroperating said gate, a regulating valve for controlling saidservo-motor,

' .means for biasing said regulating valve to gate-closed position,fluid pressure operated control means for acting against said bias mgmeans, a brake-for sa1d prime mover,

fluid pressure operated means for applying said brake, means forcontrolling the supply of fluid pressure to said brake-applying meansbiased to brake-applying position, fluid pressure operated control meansfor acting against said bias, and means for con-' trolling said fluidpressure control means.

5. In a con'trolsystem for a prime mover,

' a gate for controlling the admission of operating fluid to saidprimemover, a servomotor for operating sa1d gate, a regulating valve forcontrolling said servo-motor, a

governor responsive to the speed of said prime mover for-controllingsa1d regulatmg valve, means for robbing said governor of control of sa1dregulating valve and for v causing said regulating valve to move to thegate-closed position, a brake for said prime.

mover, means for applying said brake, and common means for controllingsa1d means for robbing said governor of control and said brake-applyingmeans.

6'. In a control system for a'prime mover,

a gate for controlling the admission of operating fluid to said pri1nemover,a servo+ motor for operatlng sa1d gate,aregulat1n'g valve forcontrolling sa1d servo-motor, a

governor responsive to. the speed of. said.

prime mover forcontrolling said'regulating valve, means biasedto robsaid governor of control of said regulating valve and for gate-closedposition, means for overcoming sa1d bias, a brake for said prime -mover,

means for applying said brake, and common, means for controlling saidbias overcommg means and said brake-applying means;

7. In 'acontrol system for a prime mover,

a gate for controlling the admission of operating fluid tosaid primemover, a servomotor for operating said gate, a regulatingv valve forcontrolling said servo-motor, a

governor responsive toqthe speed of said prime mover for controllingsaid regulating valve, means biased to rob sa dgovernor of control ofsaid regulating valve and I for gate-closed position, fluid pressureoperated means for overcoming sa1d bias, a brake, for sa1d prime mover,fluid pressure operated means for controlling the application of.

said brake, and common means for controlcausing saidr'egulating valve tomove to the ling the supplyof fluid pressure to said bias- 1 overcomingmeans and said brake a'pplication controlling means. v

In testimony whereof,the'signature of the inventor. is aflixed hereto. Y

, CHARLESB; TAYLOR.

